I didn't forget, but the DPP33 is a ghost, so why bother mentioning it at all? DP34's are everywhere, and if he finds somebody that has a superdish, he can probably get one for free just by asking around. If he's still using legacy equipment, it's about time he upgrades everything!
As usual Iceberg is correct. The DPP33 exists and I have one. Also, I neglected to consider the legacy twin, which in effect has two SW21's inside. So if that's what the OP has, then only two SW21's are needed as Iceberg said.
sine the OP posted at both sites apparently there is info that they didnt put in the post
Its 3 separate Legacy LNB's so to combine you need either a SW21x to combine 110 & 119 and a SW21 to combine 129 to the bunch (need 2 of each) or
get a aftermarket SW31 which is like a giant SW21x/Sw21 combined....again need 2 of them