15th practice to ride python

Now, I can use smaller 4 rear gear and 1 front large gear.
I can ride speedy with them. But in the town, I can't turn well and keep straight line.
I think, I use crank shaft for belt drive system which the only chain wheel side is longer so chain line isn't at right position, So I can't use larger rear gear and front deraileur.
I tried BB for normal use but the length is longer, maybe 127.5 mm.

Today I fell down for 3 times. the bottle cage is bended. Attaching bottle cage on side is wrong, I noticed that.

I broke back mirror, too when I fell down. I need screw driver always to repaire it.
I have some light hurts on leg, arm and ass. my racing bottom was broken.
Not Fine.