Mine had a similar issue last week , not turning on/off when it felt like it . Had a battery not found error code so took it to Berkshire Cycles and they discovered the tcu to battery cable had corroded from moisture so replaced it , now works fine !
Kenevo came with 165 and after braking 2 I tried the hope 155 . I’m 5.10 n a half and they are perfect , everything feels more compact and stable . Less pedal strikes and they look nicer !
I use natures golden ratio of 1.618 , divided by the length of my thigh !
You never know ☺️
What I’ve learnt is a saddle might be comfy for a hour but not 2 or 3 so I stand more !
The op wants an extra 3.5 mph , why is everyone waffling about car tax 😂😂 Before Brexit they was all saying “we can make are own laws” , well let’s effing start doing it then !
Dude the main issue for me is jumps , if the bikes power cuts out in the wrong place it’s disaster time 🙄 15mph is too slow 20mph is good for most situations . I derestricted mine only for this reason and will probably only pedal over the limit a couple of times a ride .
There’s already been a petition on here that went nowhere ;
https://www.emtbforums.com/threads/petition-to-raise-uk-ebike-limit-to-match-the-usa-20mph.14427/