Scrubing with Fruity Granulizer?

Would there be a way to have the start position knob refresh so we could scrub through a file using automation and fruity granulizer? We could just press the hold button or put the wave spacing to 0% then use the start position to scrub forward, backwards etc. it would be a lot more handy in some cases than using the wave spacing knob. Also is there a way to make the hold button be toggle'able instead of having to create an automation to have it stay on hold? A way to do it is to put the wave spacing on 0% put its rlly hard to do so as the top left corner of fl studio can say it is 0% but it is actually not exactly on 0% making the grains move very slowly. Its kinda hard to put the knob on exactly 0% maybe a quick access right click option on that knob to put it exactly at 0% could be useful!

Thx for taking the time to read me and hopefully you guys consider my feature requests