I may be wrong but a lot of the money i have spent on mine has stemmed from the fact that it wasn't used enough by it's previous two owners (800 miles 10yrs) and that now i use it, it seems to be a wee bit more trustworthy.
(Please note that i did not under any circumstances say that it was a: rel***le or b: tr***le fr**. I have made that mistake before and paid!!)