Courtesy of Seibertron.com (+ Personal Email), Reprolabels has put the word out to Fans that they are looking to expand their replacement stickers for G1 Transformers Toys:

If you have any unused sticker sheets, they're looking for scans of the ones listed below. They must be high-res, and they must be scans (not photos). The scans must be at least 300 dpi and can be in any high res format such as TIF or 100% JPG (no optimization applied).

Also, if you're the first one they receive the scan from for any of these, they'll PayPal $10 per scan right to you!

Thanks for any help you can offer!

Hosehead
Horri-bull
Sizzle
Fizzle
Guzzle
Crosshairs
Grotusque
Misfire
Repugnus
Slugslinger
Weirdwolf
Fangry
Landfill
Needlenose
Vroom
Roadblock
Skyhammer
Quickmix
Quickswitch
Ruckus
Scoop
Getaway
Chainclaw
Snarler
Siren
Spinister
Squeezeplay
Windsweeper

Credit(s): ReproLabels.com
As these replacement stickers are of benefit to the whole community, If you can help Reprolabels you'll be helping everyone!