Smash 3DS Smash Run questions

[Dairantō Smash Brothers]

So, yesterday I was trying to get a single custom for Dr. Mario (Soaring Tornado). After grinding for like 3 hours, I still didn't get the custom. I tried my damnedest, but to no avail. Could there be something more to this situation, or does the RNG just hate me? Also, is there a limit to how many pick ups you can collect? If that's the case, should I try to avoid picking up anything else besides Custom Parts? Also, does anyone have any pointers or tips that I could raise my chances of getting it, or any powers that could help? Much appreciated if someone can give me the scoop here.

 

[dragonexpert]

The custom moves you pickup are random, although they seem to be more likely to be one the character you are using can use. I have never gotten to the point where I couldn't pick up an item in a Smash Run.

Getting higher scores tends to give better results from what I've noticed. Many characters I use a level 2 Hammer, level 3 Cyclone Blades, and a level 2 Brief Invincibility. Adjustments may need to be made based on the item limit for the character.

 

[MVboy39]

Welcome to Smash Run, where you only ever find what you don't need. Seriously, there was one time I only needed two more custom specials for Jigglypuff, and after two hours, I ended up getting 3 new specials for Lucina and none for Jigglypuff.

EDIT: yes, I was using Jigglypuff.