Also used it for a long time
Got my first kit off Squint many many years ago 10 +
Only ever had one problem when i had purged the nitrous and switched the ign on and blew the inlet manifold off :-(
I hadnt got the ign delay on at the time ( cock )
Started on a 25 hp kit now up to 150hp jets
I only use it in 3rd plus gears
Never had a problem with my engine 44 lbs boost and a straight 150 shot .
Wizards of nos kit is the best on the market and Trev is very helpfull.