Thor used to use a lot of Workhorse Custom Chassis manufactured chassis. These came with the no longer made Chevy 8.1L vortec, when GM stopped making the engine, Workhorse basically went out of business.. I have NO complaints about my Workhorse.
Page 2: Ford... Well the chassis, crabbing, and any engine issues you have belong to Ford.. All Ford.
The hydraulics... Not sure who did that but I'd blame THOR.. the only hudraulics on my rig are the jacks and they .... Well they are no longer OEM controlled and the controls I have are very "Solid" (I designed and assembled).
The wipers.. That's Thor. they should never "Get tangled up".
I do admit my wipers had a screw loose.. I let the shop fix it under warranty.