Canister Help

[Brewers25]

I have all the canisters except for the last two on the final joker level. I get up to the bell tower and the arrows from the mini kit detector point to two blank spots. Please Help.:confused:

[xgonscm2]

after you build the gun seats, shoot the rt? bell until canister comes out, the other canister, just keep jumping on the switch on the left side of the screen, it will pop out of the bell.