Hello I purchased a used 125 Deluxe on October 2023 I really love this bike's performance it was reaching high rpms and toping at 110-120 fast forward I installed a fancy big carb which pushed the engine to 140-150(according to the meter) but after then bike engine failed( destroyed by me Its my fault for tempting for speed) it needed a rebuild I got it rebuild (a trusted mechanic I know) got it rebuild after rebuild engine was in break period (it still reached 120 I did one time) and remained never over 60 and in the break period (mechanic told me to change oil after 500kmh then you can it as you wish) I shifted to Islamabad and after 500kmh I got the bike serviced then oil change and tuning(before it still had the power) after that at full throttle it started missing I thought service water would be the issued it will dry up then but after that it would still go missing when I go full throttle and then I told the mechanic he refused any claims and said I fix it but it never got fixed I tried different mechanics but the issue remained same (some did reclining of carb even thought I told them ky krwachuka hn and some did carb mixture 1 did some setting to current) but it did not fix yet and then I go to another mechanic he found the issue that when bike was at full throttle the choke would automatically go up he said just need to fix this choke lever but then his 'ustad' came check and said engine "head khulega issei hawa ky pipe issue krhy" I then said I don't need any work cause (I am not a pro in bike) I think it would be anything other than the engine needs to be open then I kept the choke lever down with my hand and did full throttle (I felt 90% power came but with some missing) and bike also misfires bike used to reach 10-11k rpm now it hesitating at 8-9 with missing and misfires and till this day I can't find a mechanic that can fix my issue. I am approaching to this forum for help as I really love my bike and it really saddens when it just gets worse by mechanic rather then fix any expert mechanic reference will be really appreciated thanks
summary of what the different mechanics said
carb lever
cdi, coil
engine head khulega
"some cleaned opened carb but still no fix"
please any insight will be really appreciated on what could be the issue that's why I gave whole history of bike so if there could my fault in using the bike wrong
engine oil I used mobil 4t 20w-50