@Chipp
<< The places you point to are obvious errors introduced in Onshape or when exported as STEP from Onshape.

Yon know that you can now also use again 123D Design between Moi for delicate fillets ! ;)
http://www.123dapp.com/design
Because Step / Sat format import export have made their return for Free version! ;)
DIfference than Onshape : it's a local application! ;)