Gusset Slim Jims stripped my crank arm threads

[jimwise68]

I bought a brand new pair of GSJs for my MTB and the left hand pedal stripped the thread of my crank, as it came loose I kept retightening thinking it was just working loose and vowed to put some thread lock on it.
When I finally took it off the internal thread was completely stripped.
Had to buy a new crank and it's started doing it again.
Can I speak to Ison Dist. about this. I'm fooked right off as my first crank was a good FSA crank.

[HEYWOOD BMX]

  Think Ison would probably say you`d have to prove the thread stripping was down to poor manufacturing.If the pedal wasn`t fitted 100% straight,that may have caused it to strip the threads.I`ve had several pairs of SlimJims & they`re still going strong on both alloy and cromo cranks.Still worth calilng Ison as they might be feeling generous