250-500cc Petrol on hot motor

Hello fellow Huskers
I NEED YOUR HELP
My WR300's tank (2009 model) has become brittle and cracks are appearing all over the under side, meaning when I am riding premix is dripping over my engine. I am told I can't have it plastic welded as it would just slpit somewhere else. BUT, and here's the clinch - replacement tank (genuine is $570 AUS or IMS 3.4 Gallon $390 AUS. Anyone know any cheaper options?
Thanks
Raysaw

Flush the tank and leave the cap and petcock off, if you can find where the cracks are, look for the start and finish of the cracks and drill small hole to stop the crack from spreading.

With the tip of a hot soldering iron, gouge out the length of the crack enough to fill. If you can get some Q-Bond adhesive, fill these gouges with the Q-Bond and it's good as gold. You can use kneedit or quiksteel as well but you'll need to roughen up the surround area if you want it to strongly stick.
I've sealed a crack on my tank with QBond for over 2 years and no leak...now the petcock on OTOH

Thanks OMG - I'll give it a try and report back - Champion.

give BMP or Halls an email & check their prices. be a hell of a lot cheaper even factoring in shipping! ask on classifieds here also

New tank or potential fuel bomb, new tank wins.

Thanks mate - Who are BMP or Halls? I want to call them but cant find.

bills motorcycle plus salem oregon and hall's cycle in Illinois I believe.

Here's more chatter about fixing gas tanks. Complete with video.

http://www.thumpertalk.com/topic/1091698-leaking-gas-tank-can-it-be-fixed/#entry11698629

Update:
Attempted repair as per suggestions above using a range of flexible polyethylene capable products but the tank is just too brittle. Spent the other day thinking I had finally got it right but then noticed my boots were wet.............. Engine covered in premix. Local Husky dealer said it was unusual for a tank to become brittle in such Got a quote from Halls at $349 US delivered - which was great but my local shop has near matched it. Oh well, bike has been very good to me so I shouldn't complain. Just thought I would pass on my personal experience.