OK, here is another of Rainman's "Where does he even come up with this stuff?" specials.

I have a Giant Cypress which I have converted into a kinda sorta road/touring bike with mostly 105 components. I had a rear wheel custom built on an XT hub and Mavic T519 rim. Now I am assuming that the Cypress has 135mm wide dropouts since it was originally set up for mountain bike type gearing and the shop recommended the XT hub for the new wheel. At the time, I was not aware of such things as dropout width so I did not question their suggestion and I figured the XT hub might be tougher. I have been looking at getting a second rear wheel as a spare. I was just going to get a prebuilt one with 105 hub and T519 rim. At about $105 from Performance, it would be WAY less than what I paid for the handbuilt one. Having replaced several broken spokes and trued the wheel, I feel comfortable with getting a ready made one with good components and tweaking it myself.

Now here's the deal. The 105 hub is typical road frame width, 130 mm. Assuming my dropouts are 135 mm (if someone would tell me exactly how to measure, I will do so. Inside to Inside, Center to Center, Outside to Outside?), can I use the 105 hub and just squeeze the dropouts in the 5 mm? If that is not a good idea, would it be a problem to stick a couple of washers on? Are there special washers/spacers made for this use? Prebuilt wheels on XT hubs all seem to be on 26 inch rims or I would just go with XT. And these prebuilt wheels using the same exact components - XT or 105 hub, T519 rim, DT spokes - cost WAY less than the one I had built. I will not do that again unless I absolutely have to.

Any suggestions?
Regards,
Raymond