Before I started changing tees every season, I had as I recall about 3 tees plug, out of about 150 taps. Since I use 3/16 x 3/16 x 5/16 tees, the blockage stopped at a 3/16 fitting, that closed off all sap flow upstream not just 1 tap. In my book that was not acceptable, that's why I started replacing tees. It was not my original idea, I read it somewhere that others were doing it. Back then I think a tee was about $.26 or $.27 each. I've been doing it ever since and will continue. As I say, it's cheap insurance. I suppose possibly you rinse better than I did, but I'll never know because at the price of a new Tee I won't experiment and risk it.
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.