I got my brand new clutch disc in and have a question. Is this disc supposed to run thin? I measured 0.028" from the top of the ceramic pad to the rivet with my slide caliper. TSRM shows an acceptable minimum rivet depth of 0.012". I know I'm more than double that, but it still seems to be really thin for a new clutch disc. Does this sound right to you guys. Anybody know what the rivet depth is on a stock Toyota disc for comparison? I'm wondering how long this clutch disc is going to last.