Well, having stuck 20k miles on my 'unknown condition' 1275 it's started to get, well, rough as hell and noisy as sin. And it appears to be getting worse (I suspect the 40 miles a day - almost all motorway - isn't doing it a lot of good). That and it's getting through oil somewhat quicker than previously.
So I've got this spare 1275 block that's kicking around (actually it's an entire spare engine) - and I was wondering how much I'd have to pay to get someone locally to rebore, skim and rebuild the block (or more accurately, what would be a fair price). Also, are there any improvements that should be made at the same time (istr someone mentioning a better oil pump). I was planning to pinch the ancilleries of my current 1275, and then rebuild that one myself... at my leisure... at a point when, say, I have a kitchen and a bathroom in my house

Given that I know very little about rebuilding 4 stroke engines, is there anything I should look out for, ask for, or... anyone got any recommendations for places near slough?
Cheers m'dears.