Think about it. If the problem is the magazine follower then only the last round, the one loaded into the magazine first, gets hung up. The others rest nose tip to cartridge base and feed just fine.
Solution: load a traditional bullet load first into the magazine with the LEVERevolution ammo in behind it. You still have a full magazine, if that's important to you, the LEVERevolution rounds feed just fine, and the last round will feed just fine, as well.
No parts to buy, need not disassemble the rifle, it's just that simple.