I thought about doing LPG conversions for my family and close friends and it's cases like this that put me off. I would consider you pretty lucky to have your conversion go smoothly from its original install and first map. As most of you with LPG know problems with LPG can arise from out of nowhere.
On the LPG forum he has always been very helpful to others and his advice has always been good and informative. I've never had help from him personally but do sympathise with him for the fact that LPG installs can be so unpredictable especially in the first weeks of an install.
I have seen some of these posts - but mine was in hindsight not a good install, I should have realised after a week of it not done. The only bits I didn't redo on the reinstallation was the pipes from manifold to injectors, so when he said I copied him (which I refuted) all he saw was the manifold to injector pipes, he didn't see the vaporiser under the airbox, he didn't see the pressure sensors on the drivers side iner wing, nor the pipework following the petrol pipes, nor the wiring fed through the car.
I manually tweaked the mixtures - just modified until it ran well - this does need fiddling though!!!!
Just wondering if it was worth connecting a lambda probe up as there is no lambda connection in the system - but wires are there as is the software screen.
As to putting the injector straws in the same place, well there is only one place they would go - if I redid it now I would go next to the petrol injectors.
To be honest I would recommend anyone who understands cars and does their own maintenance to DIY