I had a bed adhesion issue on my Prusa a while back, I learned a lesson look really carefully at downloaded STL files. The first layer was not actually touching the bed. I digress.
I ended up with the a mess, blobs on everything. I pulled the J head and started cleaning, when I went to pull the heater cartridge out and Thermistor I found the grub screw hole filled as was the allen recess in the screw holding the heat block. I fought with this for a while and decided to cut my losses and replace the block and parts.
The I reassembled I got to looking at it and thought if the grub screw hole was facing up it would not fill so easily. So i have mounted the heat block upside down.
This changed the relative Thermistor and heat cart. positions but as I tend to prefer brass blocks, I am hoping this will not make a difference. Thermal mass and all. I am still using a X nozzle and it needs a bit extra time to heat up so the changed positions in my mind will not make a difference.
I have very successfully printed 3 replacement fan shrouds in ASA (first time with it. why was I ever printing ABS??? No more, ASA printed flawlessly)
Has anyone else tried this?