Does anyone have any information for what seals are required for my 2017 29.5 BHDS with two Lippert 4400 lbs axles? I have the tag number, but every place I call demands I bring in an old seal. I'd be happy to do that, but I don't want to pull one of those seals out (and I'm sure I'm gonna damage it) and then get stuck in our current spot (cause I can't reinstall it). The ultimate goal is to replace all of it - brakes, bearings, etc. But to start the inspection, I'd like a "oh no - this is beyond my capabilities" insurance with backup seals. 
Hopefully that makes sense, and any advice would be greatly appreciated (I have the axle tag number and the document from Lippert to break it down but no one (I've talked to) seems to know what to do with that information). For the record, I've called about 3 RV shops, a farm/industrial trailer shop, and went to 2 auto part stores. Turns out, no shoes, shirt, or part number = no service.
Hopefully that makes sense, and any advice would be greatly appreciated (I have the axle tag number and the document from Lippert to break it down but no one (I've talked to) seems to know what to do with that information). For the record, I've called about 3 RV shops, a farm/industrial trailer shop, and went to 2 auto part stores. Turns out, no shoes, shirt, or part number = no service.