Filament consistently jamming / clogging in Bowden tube on MP mini 3

I’ve had this MP Select Mini III for years and years. Lately it’s consistently jamming/clogging somewhere between the hot end and the PTFE tubing – but not right away, often when it starts getting to the infill layers.

If I don’t catch it in time, the filament twists and twists until even the Bowden tube is clogged (and then it’s a whole lot of trouble to clean out).

My temperature has been wobbly of late, so I bumped the temps higher than usual (200-210 °C for PLA) thinking perhaps it was dipping low for a spell and allowing it to cool.

Is this the end of the road for this cheap little guy that has been a solid workhorse or are there some known fixes that I should consider?