I'm having a bit of trouble with my pug and am hoping someone can help me out here. I've got a 103 with a phbg clone, treats CDI and 70cc kit. Its been very reliable for a long time but lately after riding for 10 min or so it'll start to bog on the low end pretty noticeably, but runs well past 1/3 throttle. Ive checked for vacuum leaks, still has good compression, carb is clean, and spark plug chop still is a nice golden brown. Any other things I should be checking?