Hi Mass,
All things considered there was not too much hassle and it all took about three weeks full time and about a month for the paperwork.
As for the problems:
The gearbox was noisy from the start and when I drained the oil most of the gearbox came out with it

- non magnetic so probably ground up casing. A credit to Caterham - a new box sent overnight.
The cooling fan ran continuously. Caterham couldn't help much and in the end I spoke to Raceline and fitted one of their 82c thermostats – job done. I think the Caterham’s supplier (Ford) was fitting 98c thermostats (for emission and efficiency reasons Ford use 98c) and this reduced the margins too much for the state of tune and ECU fan settings.
Other things that went wrong were a cracked windscreen (replace at post build inspection) and the rear coil springs were set to the wrong groove for the adjustable platform – quite a difficult thing to put right, even Caterham had to send them back to their supplier.
The diff was whining badly – investigation show that the pinion bearing was not pre-loaded correctly but, even when this was put right, the whining was bad. Caterham eventully let slip that this was a known problem with their diffs and was thought to be caused by different tooth profile to the original Ford profile. (the crown wheel and pinion are new but not made by Ford who stopped manufacturing them in 2000.) The good news is that there seem equally strong, if not stronger, than the original Ford items.
This is the fifth kit car I've built and has been by far the most enjoyable. All the problems were easily resolved and Caterham after sales service was great once you got through to the right people.
Hope to see you at the weekend.
