Is it a waste of time grinding at the start to get Tsunomon's scan rate to 200%? Also, how do we raise the stats of Digimon after they reach their max? My Pabumon can't go any higher.
De-Digivolve. See the previous page for explanatons on what ABI is and how it affects the max level. But since Pabumon is a baby, Digivolve him to Motimon and keep Digivolving til you can't Digivolve anymore and the level is maxed... then De-Digivolve to up ABI and thus up max level so you can Digivolve some more.
And it's very very quick to get their scan to 200 for baby/in-training but personally I don't usually bother and just get them at 100% scan rate.