New top end...now fouling plugs??

'96 YZ125...never had a problem fouling plugs before. Just put in new wiseco and had the cylinder replated at US Chrome. Running Yamalube 40:1. I haven't changed jetting or anything. Bike runs better than ever, tons of compression. I'm familiar with jetting my bikes and it runs clean all the way, but it's fouling plugs like crazy now. Plugs are wet and it's seeping spooge out the pipe/head joint. I'm thinking crank seal, but the oil level hasn't dropped yet and nothing out the crankcase vent. Admittedly I've taken it easy breaking it in, but it had more full throttle today and still fouled.

Anybody ever had this with a fresh top end?

Yeah, I should've checked the float level today. I moved the clip on the needle up one notch, and turned the air screw 1/2 turn out. I rode it a little while and checked the plug...it's still pretty dark but not wet. I'll get a leaner pilot also. I'll keep you posted.