I think what causes this in where mine came apart is the flexing inside of the grommet tube from the hatch to the body. That type of tubing cannot handle that. I used a stiff wall type used for vac lines on emmissons so hopefully it will hold up. They must be idiots for making it pnuematic over electric. Electric setups are much more reliable and have been for years but at least I know I can fix it myself now. The only thing scary is pulling the panels hoping they don't break. Anyway, hope this helped. I know this site has some very useful information, I am on a Harley site for vrod owners as well and it helps a lot. Mike