I just received my 100.3, and I’m looking to convert the metric plumbing kit that came with it over to standard plumbing. However, I’ve never plumbed anything before, and I’m encountering difficulty when looking for the fittings to do so. I saw that BRS sells metric-to-standard conversion couplings. I also saw that FlexPVC has 32mm-1” (both drains) and 25mm-3/4” (return) unions. However, I don’t know if the threaded fittings that connect the union to the pipes that sit in the overflow box will fit the unions that I linked to. Also, I had seen in another thread that someone used Vertex fittings, but they are now discontinued. If anyone has any suggestions, recommendations, photos, or a list of parts that would help me convert from metric to standard, then I will be incredibly grateful to you. Attached is a photo of the plumbing kit that came with my 100.3 system. Thank you!