Marc,
With respect you are pouring money away and just getting stressed about the van.
I have had transits, midis, sherpas, the list is endless, that allways let me down, wouldnt start etc etc. Like you it allways seemed to be up on blocks or I was shaving my knuckles down the back of the engine every weekend. Brill eh.
In the end I went retail and bought(invested) in a 2 year old VW Transporter.
I went for it because we had a family car, a Golf that I often used when the van wouldnt start, because it allways did, and pulled like a train even when loaded.
The van cost me 8k even then, but Marc it was the best thing I did, reliability, it started, never let me down, warm in winter, looked good, painted and sign written etc etc.
Its your life and your money but there are so many deals out there at the mo, think of it as an investment. And it goes against tax. Wahey!
Good luck this weekend, while we are having a beer round the barbie, I suppose you will be up the breakers looking for that whatsit to put on the matrix.
Murkie