Scored Main Cap Bearing - Ouch

OK, on the XP, MH. Yes, that sounds like a higher flow filter type with less restriction.... I see/hear of such types at the local tracks. But they get less restriction be having a more open filter media, that passes larger bits. 35 micron particles is .0014" and is getting up to close to, or exceeding the typical, bearing clearance gap; I'd suggest the OP use a regular media filter to filter out smaller particles.