[HECnet] RSTS DECnet config question

Hail all you RSTS buffs! One of my nodes (PIRSTS) is running RSTS V10.1L and DECnet V4.1 Ever since I am on HECnet, I have observed that job slots are filled over time with jobs under the DECnet account [29,206] in HB state, up to the point that the job max is reached, and I cannot log in anymore. My working hypothesis is that the polling processes (for HECnet mapping and other inquiring minds - you know who you are) keep creating new jobs, instead of reusing old ones. Is there a way to tell DECnet/E that it should not keep jobs in HB state, but log them out after use? Or reuse existing jobs on incoming connection requests? On DECnet/VMS there are timer and other logicals that steer this behavior. Running a daily kill job seems, well, overkill. Thanks, Wilm