Race engine Knocking

Hello guys. I'm having some problems lately with a race engine that i built, and has been suffering from slight knock on outer cylinders, 1 and 4 to be exact. if anyone could give me some pointers on how to avoid it.

Engine spec. Zx10rr 2017

4 piston 4T dohc 1000cc

NA 13.9 CR 70mm squish

Race ported head and cams, valves and springs.

Cams at 113deg IN with 314 deg duration 11mm lift and 107deg EX with 311deg duration and 9.5mm lift

stock pistons, they are forged from factory

Usually we run 102 EU octane gas, and maybe this is the problem, i will test tomorrow some proper race gas or e85, ill see what i can get

Still, despite the slight knock, i don't have a picture of the piston but in the pic of the head you can see the 1 and 4 domes slightly more clean , so its very light and not very destructive, like after 5 races it starts to lose a bit of performance, i still managed to get 227hp from this engine, so its very fast even with the knock. for comparison world superbike engines do between 240 to 250 hp

But the problem is, today i installed a G4 knock link, so i can do something about the knock, i want the engines to be at top performance and the factory race ecu doesn't have knock sensors. But it goes constantly off, even at 30% throttle its going off. On the instructions of the knock link detection it says not suitable for noisy engines, so the problem is, is it detecting such faint knock, or is it overly sensitive, or it might be that engine is extremely noisy and it just goes off, and these engines are very noisy yes. i backed off 2 deg from the stock ignition map, didn't stop, tried 4 deg, didnt stop, so im thinking its just the g4 being overly sensitive to noisy engines. if it is the case, i need to find an alternative to log knock data to an AIM data log system

or any other solutions, like different timing maps on outer cylinders, richer afr in outer cylinders, take out a bit of compression, take out a bit of degrees from the cams or one cam. tell me your best opinion. the only thing i cant do is 4 different WB on each cylinder, no space with the current exhaust that i have

Try adding more fuel and retarding ignition timing at the same time- that's normal procedure from stock ECU. If it doesn't help most likely it is false knock.

Audio or electronic knock detection is almost impossible with typical sport bike engines in my experience, the spur gear primary drive makes high amplitude noise over most audible frequencies.

Almost no brand of bike manufacturer have knock sensor from factory, but bmw has 2 on their m1000rr, and that engine makes alot more noise than ours so there is a way to make it work. Could the solution be a custom system, i would get a plex knock monitor, listen to knock and determine the range of hz on the noise of the knock and get a bmw sensor or something along those lines

i just found this post https://www.hpacademy.com/forum/general-tuning-discussion/show/motorcycle-ideal-knock-sensor-placement/