On both of my SL's, I put in a filter between the pump outlet and the nozzles. The filter was a gas filter meant for lawnmowers, about $1.50. It took a little heating of the nylon reinforced hose to get it over the filter ends, but it works.
The nozzles on an 107 SL are aimable. There was a tool that may no longer be available, basically a collapsible radio antenna with a really thin high-strength pin sticking out of the other end. I made a copy of this with a cheap Harbor Freight magnetic pick-up with the magnet cut off, some JB-Quik, and a very small drill bit I got from HF also. This made a difference because in removing and replacing the 380SL's nozzles while repainting, I really screwed them up.
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