sorry I didn't get back to you sooner. I'm supposed to be notified when there's a comment in this thread but it didn't work for some reason. Sounds like the same dents I have in mine.
They made some great bikes back in "the day". They didn't all look the same. Some of the bikes I lusted after were the Moto Guzzi LeMans 3, Gilera Saturno, Aprillia RS250, MacIntosh 1000 and on and on it goes

I actually looked up a heap of Mito videos on Youtube after seeing your tank photo which then took me to the RS125 videos and...... I gotta stop torturing myself


Cheers
Andrew