Holy crap, my wife would kill me if I did that.... looks like fun though.

Even if you remove the jet plate, whatever non-soluble crap is in your loop will clog the pins. I would use new distilled water only plus Pt nuke/biocide, and maybe 4 Koolance? quick connects and an inline high flow filter, run it for a few days with filter to trap any residual crap and suffer bad flow for few days while filter is in, and then via quick connects remove the filter and snap back together (use male/female for filter and line). If your tubing is not plasticizer free, then I wouldnt waste time and money doing that, since more plasticizer from tubing will be an ongoing problem. Also if you have thermochill rads, or flux problems, I would make sure rads are very clean.

and the compressed tubing does look like an issue, too thin walled?