Fuel Pickup

I have a 2008 TE510 that I bought used. I installed the oversized tank on the bike I did the fuel pump mod at that time.

But the pick up leaves about a half gal or more of fuel unusable and I need that to make a 100 miles between fuel stops. I am sure I'm not the first to find this I have searched but have not found the fix for this. Please help with how you guys are getting all the fuel from the tank

The fuel pump is in the back of the tank, right? (where it should be- not like my screwy 310r with the pump up front). I'd take a look or pull the tank and make sure the back of it is sitting all the way down. If it is, my next move would be to pull the pump/plate and make sure the pump is down and and secure.

There seems to be a lot of IMS tanks for huskys out there, and I have not heard of any major problems- outside of the tank's mating surface with the aluminum fuel pump plate. I don't know if anybody else (clarke, acerbis- the oem) make any aftermarket tanks.

Yes it's in the back. The tank is all the way down. I guess I will see if I can bend it down a few degrees to improve the pick up

See if it can be shimmed up in front, the way 250 tank can...

hunh. I'm trying to figure out what you're gonna bend....

IMHO, I don't think I'd bend anything at this point.

Bending is not an option at all.
The pick up mesh being at the center of the pump isn't the right location for you, I'd try to install a longer hose with the mesh at the end and point it to the bottom side of the tank.