I had some unprotected flexwatt that was showing wear marks and I had read of it taking abuse so I put the tin in. The flexwatt that I noticed the wear marks on was around 1.5 years old and had a tub sliding across it at least 2 times a day. I don't see how putting the tin there could have hurt anything.....and now I have no worry about a spot wearing thin......I am all about less worryOriginally Posted by Wild Bill
EDIT: The tubs in that rack also fit rather 'snug' so their was a bit more pressure exerted on the flex than with my current setup too.