Funny thing happened to me yesterday when PW a driveway. I bought a 16HP Vanguard (Briggs Engine) from Rutland Pumps 5 years ago when they were cheap as chips. 250 bar at 21 or 23 lpm not sure what. Any way I have 3 twin turbo lances, two with Italian 035 nozzles and one with cheap Ebay nozzles. Went the Italian job and took the two good ones with me and a rinse lance. I thought this will be the easiest £250 I will ever make and I forgot this was the first clean of the year with my PW. I had already tested the washer and it was running fine so filled with fuel and wheeled it up my ramps and into my van. Got half a mile away to the job and filled up the bin. started using one of the twin turbo lances and one of the nozzles would not spin, I thought, never mind I'll swap it for the other lance and the same thing happened with it. I was raging and even contemplated swapping a bad nozzle for a good one. In the end I persevered with one nozzle and a jet. After changing the lance over a few times one began to fully work but I was nearly finished by then. Tonight I was buying 3 new nozzles from Rutland so I have 3 all Italian nozzles which should all be working for my next job in a week's time.