I have the basic PK80, mildly ported, nt speed carb. Now to the problem. It has been acting up a bit on start up and warm up. It will fire up right away but I need to rev it high to keep from just instantly cutting out. Never seen this issue before. It started happening out of the blue after running fine for a couple of years. One thing to mention is I got a shock from touching the plug wire and or the plug cap. That was through my leather gloves. I'm pretty sure I've touched these before and never had a shock. I haven't made any changes and this came out of nowhere so I'm a bit confused. Does anyone have any suggestions?