Any ideas for the above? my mini filter was cleaned about 6k ago? my tickover has always been rubbish so the other day i set about adjusting it, i did, great on pick up when cold, but when warm no different, under investigation i found that when warm the adjuster did not hit the stop but it did when the engine was stone cold, is there a bi metal strip or something that could alter this ajustment between hot and cold? for reference the adjuster before my original ajustment, did not touch the stop when cold, and now since ive adjusted it is fine when cold but cuts out due to under reving when hot. also getting about 20mpg or less so something is not quite right?