I couldn't find a damn guide for the front grips either.
The takedown lever for a real AK does nothing on a TM or their respective clones (Krakens for example). Take out the cleaning rod under the barrel (pull the tip of it down and out), take out screw thats holding the gas port to the barrel (the gas port being the pipe coming off the barrel and into the upper handguard), and slide it forward. Then you should be able to pull off both handguards. Pull hard.
As for Gunners - they don't friggin' reply to their emails, and apparently hate Canada. I'm going with Rsov (
www.rsov.com.)
Heres the kit that I'd pick if I was doing the conversion you are:
http://www.rsov.com/product_info.php?products_id=1264
Best of luck on the project,
Cheers,
Alex