BARCREST Skill Slot Machine (How to Set Odds?) No Manual

[Dirty Slots]

Machine Says

BARCREST B-4-15   000240   and also "type-A" and also BARCREST K.K. B9903 TOP

Everything by the buttons is in Japanese. I figured out how to change the luck level from 1-6 already.

My question is: Does anyone know if 1 or 6 is the highest payback setting?

Pics of machine below.

Thanks! -Nate

[erbs]

I'm pretty sure 6 would be the highest percentage. 

[gameking6]

6 will give you the most wins.

[Dirty Slots]

Thank you! Playing on 6 for a while. This is just like my other skill slot which is super annoying because it is very predictable and did the same thing every time. It's like these 2 machines are running the exact same program. Hit the Bonus and it does like 10 free spins with 8 of them landing on the free spin symbol and spitting out 15 coins each time. This happens always if you play the machine for about 40 minutes.

2 machines below...totally different years and brands. I'm disapointed for sure. I though the new one would be different. It's literally IDENTICAL

These would be OK for kids. They are not fun to me. You also can't win more than 15 coins. No big combos, and it only pays out if the meter is above 50 (50 coins in). Then you can't put more than 50 credits on the machine.

If anyone knows how to ditch that 50 coin only setting, let me know.

Also, anyone know how to make these take Quarters vs Tokens? ?

Pics 1-2 Old Machine TAKASAY

Pics 3-4 New machine BARCREST
is Barcrest an Japanese company?