I have a Kohler V-twin 25 Hp Smoking and using oil. I have to put 3-4 ounces of oil in eat day before starting. I check the compression it's about 135 -140. I am not leaking oil on trailer or floor. When i start it up a huge cload of white smoke flys out and hangs around for awhile. When I warm it up and run for awhile and have to stop blue like smoke come's from the exhaust. I have been reading threads like crazy and from some of the post it could be a head gasket or a reed valve. I think??? I am losing power sometimes. Like i can tell that its not pulling really hard like it should. Please help on any advice. Thanks for helping.