The projected tip still throws me for a loop (at least on my TTBBC) when tuning. I’ve since switched to a non projected tip NGK and the plug looks identical to the projected tip plug without the weird discoloration at the tip of the ground strap but I have limited run time on them and even less wot tuning time so as for now that’s what’s staying. Warm weather is here so the boat will be on the water soon.