Does anyone use the "cassete cores" that you just slide one or two pieces on per side?? We are currently using the single wheels which are a pain in the @$$ to replace and when one little piece goes you gotta take it all apart. I'd imagine that its much less painless and time consuming. If anyone is using them can we get some pro's and con's for swithching over?? FYI we have about 10 5 ton dumps with Sweepster Snow Eliminator Systems on them (front mounted broom and rear air blasters) Thanks in Advance!