Ok, so i have now successfully resolved my chest burster lane random detection.
For me it was important to make sure that with the factory default settings of chest burster lane easy, the lane will detect every time it is supposed in either direction of ball travel within the rules framework stated here by ferret
"Make sure "Chestburster Lane Difficulty" is set to Easy. (Hard requires both the proximity sensor and the standup at the end of the lane, which can be, well, hard. Easy requires only the prox sensor.)"
E089085A-1E48-4AAC-852B-AD6FDB4809B7 (resized).jpeg
I know some believe that when the ball moves downwards in the lane it should be random as to when the lane detects, or it should not do so, but i believe this makes the game too hard and almost impossible to move through the save newt mode on purpose (ie actively shooting this) as the progress is often halted at this shot. Also it makes game play confusing for the magnet detection rules, as most shot attempts for a hyper sleep lock come from a downward ball travel. I believe that the positioning of the proximity switch was placed in the wrong place and too far to the right. Realigning the pcb board with the proximity sensor on does help, but does not cure the issue completely. (There is a small amount of adjustment (around 5mm) that you can move the board left and right ,up and down, within the confines of the playfield cutouts etc.)
So my solution was to make an extra lane guide to neatly fit and extend the current lane guide near the bottom/lower jet. There is no distruption of the bottom jet action or upwards shots in the lane. The extra guide serves to just move the ball over to the rhs of the lane as it moves downwards and trigger the proximity sensor properly. I have been trying out a few proto pieces (3d printed in white for testing only) and the difference is pretty amazing. The rules in place now make total sense and attempting hyper sleep locks is much more controllable. Also save newt progress is greatly improved.
I will print the final piece in clear and attach it to the existing lane guide vertical side edge with alittle double side tape. The next part of this project will be to make a full guide replacement for both pieces in one, where you can just swap the guide out if you want to.
I am happy to share this 3d model with anyone with a 3d printer who fancies trying it out and seeing if it improves your game. I don't want to start another 'discussion' on lane rules, but if you want to try it out and see for yourself, then drop me a pm.
IMG_3755 (resized).JPGIMG_3752 (resized).JPGIMG_3750 (resized).JPGIMG_3757 (resized).JPG