I couldn't find a good space for the eSun spools. The only one available was a single spacer which caused drag on the base cap side so i split that spacer in half and added slots for the existing plugs on the base cap to sit in as well as splines to attach to the spool. Now the spool is centered and works as expected. 

I printed in PLA and PETG with similar results. Using supports on the base cap adapter works well.