I said jets,but i meant old needle seats,they fit right inside most pissers with a little bit of polyurethane sealant they stay in place well,I start small just over the 2.5 size with a drill,then as season goes on drill them out bigger,epoxy then shut next season and start over,its easy to do without heaving to pull restrictors and change sizes,done like this they clog far less because of the shape of the outlet and if they do clog you can immediately fix in deep water without shutting down even in surf no prob,rather than riding back to shore with a torching hot motor to fix. My current motor setup is ridiculous temp sensitive,runs like ass a little to cold,so sometimes its more important than other setups would be.