Air shock tuning.

Im looking to buy an Orange five and having taken one out today found that i had to run the shock at 300psi to get near the correct sag.
Im around 280lb in full riding gear.
My question is, if i send the shock away to be tunned will they be able to alter the valving etc to my weight meaning i wont have to pump it up as hard as its right on the limit at the moment.
I don want to buy a new bike only to find i cant get the correct sag.
Any info would be good.
Im around 280lb in full riding gear.
My question is, if i send the shock away to be tunned will they be able to alter the valving etc to my weight meaning i wont have to pump it up as hard as its right on the limit at the moment.
I don want to buy a new bike only to find i cant get the correct sag.
Any info would be good.

Eagles may fly high but Weasels dont get sucked into jet engines.
http://is.pinkbike.com/photo/4466/pbpic4466217.jpg
http://is.pinkbike.com/photo/4466/pbpic4466217.jpg
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Posts
Talk to your preferred shock people for a solution.
Parktools :?:SheldonBrown
http://is.pinkbike.com/photo/4466/pbpic4466217.jpg
Parktools :?:SheldonBrown
http://is.pinkbike.com/photo/4466/pbpic4466217.jpg