i was gearing up to write how to do what i did again, but the OP quoted me, so i might as well show a pic. yes it is heavier as i stated, but probably as much as 15 paintballs. and since the weight is only slightly forward center of the feedneck all you weight weenies wont get your shot thrown off

. the material i used is like the mighty mend-it/putty stuff that you have to knead to activate the chemical reaction for it to harden, but it is sold under the JB Weld product line. its easier to mold since its a putty then some epoxys that are messier and have a longer set-up time. since the interior of the hopper is smooth, it didnt set up that great and fell out after it hardened, but a couple of dabs of super glue locked it in. in the pic you can see its concave shape so that the balls feed into the feedneck. enjoy
best advice, get a winnie. alot of people will swear by what they only have. Well I have a revi, 3 sportshots, 4 winnies, 2 BEs, a 40 round BE ammo box and 1 GXG. the only reason i keep the GXG around is it sits at my homebrew chrono station just incase if i forget my hopper upstairs.