Newbie with minor issues

Hi, new to 3D printing. Just got a FF Adventurer 3C, using FF PLA. Machine seams to work very well wit a few defects
Settings all default in Flashprint, slicer set to set to fine, bed 50C, nozzle 210C
When printing a gear part, I get strings over my hole and counterbores (only) and all my holes and counterbores are slightly undersized. Overall part is correct thickness, finish is great. 20mm cube prints perfect
Retraction settings are default
Any ideas appreaciated

printing to fast for the size of the part possibly, not enough info to know.
All holes when using my particular printer are .4mm under sized so I make the adjustment when I design my part. Some slicers have setting to try and compensate for the hole issue.. Welcome to the fun..