Mate I was a apprentice at the time and I had no help. Just countless hours by myself at work doing dyno runs till it was good enough to run. Once sorted it worked well. I realise what you are saying and to me back than it was the easy way out, everyone wanted me to do it that way but I was a gas fitter in a performance gas workshop and I had to stay a pureist. Like I said I paid for it but stuck it to em once it was sorted. Like I said it works well when done its just if you don't play a few tricks it won't be consistant in flow and without accurate exhaust monitoring lean out is imminent. LPG enrichment worked. Now I am contemplating running injection and dedicated straight gas engine management with nos. Lot easier and tunable but not cheap.