I have a chance to buy a 1991 XR600R with 150 original miles on it. Obviously it has sat most of its life, under cover but not in conditioned space. I am told it runs and have seen pictures of it and it does look good for a 20+ year old bike. How much grief am I in for? Am i to expect all engine seals needing to be replaced? Fork rebuild? What about rear shock? Carbs for sure, no? Any worries specific to this year bike? Vague questions for sure but i would appreciate input.