I just bought my 400ex used in july...was in perfect shape and still is...well i was going to change the oil today...so i got my wrenches and was going to take the OIL TANK drain plug out...i noticed it was very tight...tighter than should be...so i applied just a little more pressure and WHAMMO the whole bottom of the tank shreads and oil pours everywhere...i was in disbelief at what happened, and about to cry...my question is do they make aftermarket oil tanks, because i got to looking at the stock and it is terribly cheap...think as paper..and was wondering how much a new OIL TANKs going to cost me? and comments and help would be appreciated!