KWA USP Upgraded Hammer Spring

[Scottiee]

Hi guys, hope this doesn't fall foul of the forum rules, I'm not mentioning any other retailers so hopefully be OK but have any of you fitted an upgraded hammer spring to KWA USP series? I've just fitted a 150% spring to my Match and it feels very strong, almost too strong, haven't had chance to shoot it yet but the hammer really smacks down with a lot more force than I was expecting!
I've fitted lots of upgraded springs to various GBB's over the years (1911, Glocks etc) but not had one go this stiff before (no sniggering at the back please lol)!