Having got my S1W plastic back from DaveH's painter the tank tab 'chewed' by the evil recall retention plates has been filled and painted. I really don't want to have it chewed again so figured there must be another way to retain the back of the tank.

So with some 3mm Viton rubber sheet and contact adhesive I have fashioned the following:
DSC_0522 by jeznewsome, on Flickr

x3 rubber 'spacers' such that the bottom aluminium plate is sandwiched and the top on has a rubber sheet on one side only. UHU Contact adhesive is temp resistant to 125 degC so should keep doing it's job.

DSC_0523 by jeznewsome, on Flickr

Hopefully the rubber sheet will be enough to both grip the tank and protect/grip the frame of the bike?

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08 Specialized Langster

Did the same on mine Jez. That recall retainer is like a bloody bear trap

Great pics too.
Just make sure that there's enough spacers/plates/rubbers/whatever between the frame and the tank lug, (and don't over-tighten the bolt) so that the lug isn't forced to bend... I've seen a lot of tanks cracking around there...

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'98 M2 Razorback, it's a keeper.