Ben, what are the general issues with the truck? Did you buy one that needed more work/parts than you thought it would? Are you not enjoying the work or struggling with it?
My best advice to you is to not give up. It takes a lot of time to get these trucks right. My first truck was a 94 NAS that was very low-mileage and nice but also under-used and had many problem typical of the early NAS trucks. I didn't have a lot of money when I first got started so it took me years to get the truck to a place where I could do long trips in it.
To give you an idea, I bought the truck in 2005 and didn't have it ready for a real trip until 2010. Between those years, I was battling head gaskets, crappy soft tops, leaky exhaust, bad fuel pumps, and all sorts of other small issues that took years to sort out. My early trips were marked by overheating and other break-downs:
There were many late nights of work on the truck, going through it component by component and learning how to wrench from the workshop manual and patient friends:
I sold the truck in 2012 and bought the 110. I guess I lucked out with that and it was in decent enough shape to do a trip from day one. Not to say that it didn't have issues (many of them) but it ran. I guess that's one of the benefits of an ex-MOD. The MOD trucks were generally better-maintained than the civilian ones and if you can put up with a very rough, spartan configuration, they make great trucks for long trips.