Thanks for the input chaps.
Well the Lotus has done about 26,000 miles and has never failed to start (something it did on a regular basis with the original factory fit 'Lumenition' system in place). Don't forget what LOTUS stands for.
L ots
O f
T rouble,
U sually
S erious
Timing was checked on it a couple of months ago and it is still spot on. I agree Kevin about heel wear etc but it used to burn the points and wreck them before wear was ever a problem on the paxolin. Forever is several years if you know what I mean LOL !!!
Looking forward to trying this old (but modern compared with the Bullet) idea.