I'm going to look at a 1999 LS2000 tomorrow that I hope to buy. The good is the owner says it's in great cosmetic shape and based on the pictures that appears to be true. The hull looks flawless as does the original upholstery. The bad is one engine stumbles and stalls under load sometime. He says carbs need rebuilt which he's isn't mechanically inclined enough to do. I can easily do that. Other than checking compression, is there anything in particular I should look for? What should compression be?