I have replaced Valves & Guides on My Left head and also replaced rings on piston because of Left exhaust smoke and low compression. After completionI had 140 PSI on that cylinder and no smoke. THE BIKE RAN GREAT. Although after 30 miles, the bike returned to its old habit of blue exhaust smoke and after check compression it was again back to 60 PSI. I just cant figure out whats wrong. Please help.