Have a 2001 triumph bonneville and it goes great appart from one problem. The crankcase breather lets oil up through the pipe and into the airbox assembly. After a fairly short time the air filter will become soiled and it will begin to choke the engine. It also drips on the floor via the airfilter box overflow. Compression is ok and as i say it goes great. Oil level is spot on. I heard somewhere that they may have had a problem with a seal in the breather assembly arround this time ??? Anyone know anything about this problem or where it may be more appropriate to ask the question? It's now becoming quite frustrating! Thanks in advance for your help.