Wish I knew of someone who could help ya there BEAR, might give the manufacturers a call, I'm sure they have competitive stuff available for just about all weight classes and might be able to make you something albeit at a questionable cost.
As for crossbows getting a bad rap I really don't get it. True, it's less physically involved than a longbow, recurve or compound but still it doesn't have a tremendous jump in range or game taking ability. I laugh at the guys that I've heard with some regularity saying that "Them crossbows can kill a deer out to 100 yards and only folks who'd use them are spotlighters not wanting to get caught" --- bologna!!!
I don't suspect they'd be any more lethal than a compound in my book and even if they were what would the trajectory be like at longer distances, makes you wonder who starts that crap.
I don't have one and with 3 bows (1 of each style, longbow, recurve compound) I don't see the need for another besides they're illegal for use in my state even during firearms season which is completely stupid.