No doctor would diagnose on the web. But I'm not a doctor! Could be a bursitis, or lump of cartilage developed due to using your knee continuously for years - e.g. to close a bin. They can be removed under GA, but best ask your doctor some time; the knee is a complicated joint with a lot of bits.
It should be very clear to see, right on the front above the "R" in the word DOLLAR at the bottom of the bill's front.
on the bike i have it was above the front wheel it should be 17 digits long
should be located on front of engine above the oil filter.
markings are tan around the mouth, on the front of the chest above the legs, around the bum and tail, and on the paws and then halfway up the leg! :)
passenger side - above transmission pan- towards front of transmission- should be directly above exhaust pipe
your back foot should be nice and confertable on the tail and your front foot should be around the biddle of the board and at a 45 degree angle ish. with your heel partly off the board. Pop, slide your front foot like you would with an ollie but more on the edge of the nose (on the concave part) and flick down, not away. then pull your front foot back above your board and commit to it.
Should be bolted down under the hood above the left front tire.
it should be in the front passenger side, right above the tire (behind the fender)
this means that he's noticed you looking through his front window at him and he's saying hello...
Around 200 degrees or just above...If it's running hot, you may have a small leak on one of the two radiators in the front. They should only be about $300 parts and labor to replace...
It should be under the gas tank or slanted above the exhaust pipe on the front of the motor.
Get you front end aligned, that should take care of the shakes.