I've had to dismantle two shared Prusa MK3 printers due to bad clogs, one of which was caused by a bent (??) heat break and I had to melt out the clog. Both of these use an E3D v6 though apparently there is a minor difference between the Prusa version and the retail version. I fixed the clogs, but before putting everything back together, I tested the red heat block cables with a multimeter and got a high reading of 16 ohms, where 15.1 is supposed to be the highest. The other printer was even higher at 19 ohms. Since I used a torch to melt out the clog, I was worried about the cables being damaged though I don't see any damage. Are these readings problematic? What issues might I face if I continue to use the machines? Should I replace both heat blocks?