The WFCO 8955 is a three stage charger and you have the included 12V distribution panel w/120V load center. There are numerous posts on this Forum about problems with this converter and faulty charging, most notably, that it won't achieve any absorption cycle.
The charging section of this converter is easily replaced by a DIY owner or anyone conversant with simple wiring. I'd suggest you replace the charging section with a
PD 4655, a drop in replacement. Bestconverter.com is regarded as one of the best online merchants in this online community. I have done business with them and the transaction was seamless.
Good luck with your charging issue.