Hi all.Need help!At appx. 100 mi.,I changed the oil and replaced filter with a Puralator One 14610.Here's my problem.Yesterday while performing the 600 mi. service,I couldn't get the Puralator filter off.The grainy yellow covering crumbled in my wrench causing the wrench to slip and spin but not grasp.I tried to put a rubber glove over the filter to get a better grip to no avail.After several attempts and 2 different type wrenches,I found the underside of the filter slightly indented.I imagine it was from the force of the wrench.I decide to drive a screw driver thru the filter for leverage.I totally mangled the filter and never got it to unthread.The part of the filter that makes a seal with the (engine?) remained on.I'm trying to describe the outer rim of the filter on the side that screws onto the engine.Well, I did damage to this part of the bike with a screw driver trying to get the remaining parts of filter off.I got the new filter on but am now getting some drops of oil on the ground.I rode the bike for appx.40 mi.after and didn't get any noticable scent of oil burning off the pipes.What is the part called that the filer screws onto?If I have to replace it,how much am I looking at in parts and labor?