Strange, I had to put my 155 heels much higher than I put my Tyrolia and Salomon S914 heels. I found that the 155 heels came off too easily(oh and they would always still be up when I got the ski back) when making big heavy turns in crud, and also in trenches while racing. With my Tyrolias I never had those problems, but they pretty much ended when I put the dins up on the 155s(while still coming off usually when I would want). I let my shop guys put my dins at whatever they are supposed to and change them myself since its so easy(on Tyrolias, I use a 9 in park on jumps(Pipe Cleaners), will be using about 11 on the LL2s(but this may change based on how I feel on larger cliffs with that) and not sure on the 170 WLs...but since I got a ski that short I know I will never be using them out of park and want them to come off when I screw up on little things, so maby 8).