Noticed today out trying to landboard my 7.5 had 2 tears in the inner cell wall dividers. Anyone have any good repair tips? seemed like the kite still flew ok - maybe a little weird - should I even sweat it?

That's a bummer. Yes you need to repair it the best thing is to try and see if its material and workmanship related or a pilot error (meaning you knowingly crashed it into the ground leading edge down powered up.) Warrantys usually covers any defects but not pilot error. The kite needs to have all the innercells working to hold open and inflate the cells individually. When the kite powers up a blown cell is noticeable. The kite flys close to normal but doesn't quite have its umff. Tape is useable but usually the best thing is send it off. Check around the web lots of choices. The repair is usually around 100 or more for shipping the kite back and forth. The repair is measuring the orginal cell height look for bellow holes or rounds cut so the air can distrubute to the different cells duplicate the pattern on some ripstop and sew it in. God I wish I could sew.

pilot error (meaning you knowingly crashed it into the ground leading edge down powered up

I'd say that's a good bet.

I was reading about people using sail tape on foils...anyone done that with the inner dividers?

Oh yeah you can certainly use the sail tape. I would call it more of a bandaid rather then fixed. Tape works good for field fixes the only problem I see with the tape is relying on adhesive rather then thread. I'm not sure how the best way is too fix it. I'm thinking you will want to turn the cell inside out flatten the damged material perhaps even cut any shredding out then apply the tape as flat and smooth as possible then turn right side out again. A fix it place will do this then add extra material and sew the crap out of it. I would also try to double side the tape or put another piece on the opposite side of the cell. Foils are much more expensive to fix cause of all the intricate pieces sewn together to make a cell. Accuracy is key too getting the pieces to fit normal of oem kinda like a autobody repairman. I hate ripped kites but it will happen. I blew out the entire trailing edge bridle due to a safety pin snapping. I was fortunate to have chris miller from great falls fix it for me as he was involved in making his own kites. for the damage the work was good and cost about 100. Shortly thereafter i ended up ripping the kite in 2 on a 40mph gust as i pulled the safety again. This was a pretty old kite and had too much use on it. the sail cloth is pretty fragile now and still sitting in the bag after that happened.

I have been playing around with gluing kites back together. When my trainer kite blew a cell I went down to a local sporting goods store and bought a tube of Seam Grip (http://www.mcnett.com/), which is a popular polyurethane glue used in tent repair and seam-sealing. The repair held well (boosting with a 2 line 3m trainer) until the exact same cell, and it's corresponding rib, on the opposite side of the kite blew. I also have glued tearing strut seams on a 4m inflatable although that was rather recently and I can't attest to their longevity.

What you can do to glue the seam together is first go to a hardware store and buy half a dozen acid brushes. They are little disposable metal brushes used for, you guessed it, acid. Then tape one side of the tear together with some regular old packing tape. Carefully spread the glue on the opposite side of the tape and let it dry overnight. If you want it to dry faster you can leave it in a humid environment. After one side of the tear has dried peel of the tape and repeat the process on the other side. You want to make sure the tear is completely closed that way shear stresses are only passed through the glue/fabric interface and the glue itself retails non-structural.

Good luck!