Unable to print shortly after adding enclosure  

Unable to print shortly after adding enclosure

Hi there.  I've scoured the forums, youtube and any other sources i could find and I'm still stuck.  My mks3+ is fairly new.  I've successfully printed a number of great prints including multiple 17 hour prints without trouble.  I recently purchased the prusa enclosure and since then started having problems.  the same 17 hour print kept having false crash detections which i would just have to hit continue to finish the print without a problem (i have the fan to install on the board that i read about in the forums but haven't installed yet).  This led to what appeared to be a clog nozzle which is why i thought i was getting filament grinding.  I replaced the nozzle and heatsink thread to be safe as even after cleaning original it appeared to clog.  Unfortunately I ended up with the same issue and have followed guides to adjust the extruder tension.  I even increased the nozzle temp (for both troubleshooting having the enclosure and the potential filament jams) and tried faster / slower print speed.  I thought I had it all tweaked right...printing a 10 hour print and beginning of the first layer looks amazing and then eventually no filament coming out.  Same filament used for the 17 hour prints mentioned above (an articulated dragon).  Spool is not jammed or knotted.  I'm a bit frustrated and at a loss.  Arguably I'm still a noob at this but believe I've tried most of what i could find so asking for help if anyone has any more ideas for me to try.  thanks in advance.