2010 assault cfi 800 1250 miles all original no mods, april flash and 10-64 weights had it running very good last year 0-3000 ft. Went out last weekend first time since last year, midwest... sled would not rev above 7k rpm without det.. shut off and restart engine would run again same. Next day voltage regulator goes out.. I replace it and hope my det issue is fixed, still has det issue... get it home.. ran it to dealer, they say only has det codes stored, they recomend changing fuel filter, I get it home and test fuel pressure, its at 59, pull filter its clogged, cant blow through it. I pull fuel pump to see what tank looks like, the clear sump hoses are completely broken off and cracked.. pull y-pipe no obvious scoring, pull head anyway... I cant beleive the amount of play at top of piston!!! there is enough room to pull the top ring out... I can see how the rings could easily come past ring locator pin and destroy engine at this point.. at least .030 at top of piston/cylinder. Pull the jug the wrist pin and bearing are also blue.. rod looks ok. no obvious cracks in cylinder or piston skirts. I think pushing the stock engine past 1000 miles might be risky without at least a look at piston to cylinder wall clearance. Sorry for the long post, hope its somewhat helpful.