As above and....
I'd probably recommend preset as well, keep the weight down but also make sure that you get a compact drop/asa with a on and off on it.
There's not that many techs out there, but there are a few. Nicky T at planet is Timmeh trained now and planet do stock some parts so they should be good for tech work. Also I think Phoenix still do teching for intimidators, get in touch with them and ask. Ditto for NPS Europe, I'm almost sure they would offer tech support but it's best to ask.
With all the Timmy adopters over here (well done Simon) i wouldn't be surprised if a lot more Timmy techs start cropping up. Previously there wasn't the need for them, but as there are more gats in the country the need for servicing will increase. For the time being, stick to established companies, as above.