Echo Backpack Blower Parts Lot (PB770T, PB755T, PB4600 etc.)

Lot of miscellaneous Echo backpack leaf blower parts (I believe mainly for PB770T, PB755T, and PB4600 since those are the engines/crankcases that came with the rest of the parts). There is also a small amount of random Stihl parts, which I sectioned off to one corner of the tarp (see second image).
The PB770T crankcase seems to be in great condition (no noticeable crankshaft play, very little big end rod bearing side-to-side play, turns over very smooth). The PB4600 crankcase also has no noticeable play in the crank and not much rod play, but it looks like the ignition coil is rubbing the flywheel slightly so it has a stiff spot when turning over by hand. The PB755T crankcase was partially disassembled when I got it and I just partially pieced it together for the photos- the crankshaft/rod big end bearing seems to be good but the crank bearings are dirty from storage and may or may not be usable after cleaning. Both of the cylinders included (which I believe are for the 770 and the 755) are in good usable condition with good plating. There is some light surface rust on a few of the crankshaft parts but not in critical areas.