My local guitar shop has a T-40 for sale for $550. I'm really interested but wanted to get some opinions. I'm going back down there today to take a proper look at it. What are some things I should look out for? I've never bought a used bass before. Also, My current Bass is an Ibanez SR250. They have pretty different string spacings and I was wondering how you guys deal with going back and fourth between basses with different string spacings?