Hi and welcome.
In terms of all the uk "feature" based machines, so ones with trails that lead to feature games, or nudges, its important to remember that these are compensated, so the machine knows (mostly) what it is doing and what it is prepared to offer.....
So a machine which is behind its target percentage is more likely to trail hold as it is looking to pay out some money, whereas one that is on its percentage or even ahead will play "tighter" making wins harder.
Machines like to pretend that the offering of nudges or trail helds and the like are random, its not - all controlled by the game software so no real discernable pattern as such.
If you collect nothing from your Red Dwarf game, you should see it get happier, more bonuses from the postion 4 (and the better ones as well), more trail helds and the more regular offering of wins. Conversely, if you collect everything, it will be less "happy"
I almost wish I was brand new to the scene, cos it would be a whole new learning experience!
Good hunting and have some fun.