Around 4 years ago, I got back into guns, shooting and reloading after around a 40 year absence from them. I bought the Lee Challenger "O" press and except for the aluminum toggles on it, it has served me well for reloading the various rifle cartridges I shoot. About once a year, I'd not notice the handle had loosened in the press and break one of the aluminum toggles.
This happened again recently. Rather than order a replacement toggle from Midway made for my older press, I called Lee to ask if the steel toggle system used on the newer breechlock version Challenger "O" press would work on my older model. The answer was YES. So, for $14.50 (shipping included), I ordered the following parts needed to install the newer type steel toggles.
OF3221...........Ram Pin Step.............$0.50
OF3613...........Lever Clamp..............$3.00
OF3609...........1 3/16 Steel Washer..$0.50
FO2113........1 1/4 5/16-18 Bolt.....$0.50 (Yes, part # begins with FO, instead of OF, way listed on invoice)
OF2853...........New Toggle...............$3.00 (Need two of this part, one each of other parts)
Don't think the handle on my press will loosen now, nor will I break the toggle.