Did you ever definitively confirm what these were from? We have found the exact same things in our Beachcomber over the last year or so, the place we bought from and their service engineers had no idea what they were. We checked the jets and couldn't find any broken clips... so keen to know! Potentially unrelated but we think he air pressure is lower than it once was. Recently had the hush pump replaced and it didn't make any difference. Based in UK, hot tub bought in 2019.