Hi just wanting some help with upgrading the fps on my TM G36c. Its currently firing at 287 but I'm wanting it around the 340 mark. Its not something I would have a go at myself so its definitely a shop job. Just wondering if anyone knows of any good places near Corby (Northamptonshire) to do it? I did have someone at a site give me a quick quote of £130 without even looking at the gun and I think thats a bit steep? Of course I know it does depend on the work that needs doing I just don't want to get ripped off. Thanks for any help!