I have a 99 Kawasaki Vulcan classic one car bike why would the bike flood the back spark plugs and put gas in my air filter been trying to figure it out but I need help

I have already check the float not leaks or anything don't really know how to a just it cleaned jets but still doing same thing could the accerator pump be bad or the diafram how some thing to do with it I have already check the float not leaks or anything don't really know how to a just it cleaned jets but still doing same thing could the accerator pump be bad or the diafram how some thing to do with it

My name is Damir from Montenegro,I well like to ask if you can help mi, I have Kawasaki Z 750 ABS 2008 and I just by Arrow header pipes with connection for lambda sensor (I will connect stock sensor back) and I have aftermarket muffler, I also by K&N Air filter and planning to by Brisk spark plugs AR10ZS or AOR10LGS (if somebody now which one is batter or they are just the same but different designee) and I planning to make air box mod, clean air mod with connected gear case vent to the clean air ports, and I planning to make remap bat without any power commander just on bike computer but without dino because in my country still nobody have it. Exhaust butterfly valve servo motor is still connected to the ECU but I drive with aftermarket muffler and stock header pipes already 19000 km without any problem and any mistake lumps on in the instrument board. My question is if I need to remove Exhaust butterfly valve servo motor and to install jumper and to I need also secondary butterfly valves mod or not and what I get from it and if you have some more suggestions for me or If I need to jump something’s ells?
Thanks in advance.
I write in comment be Couse in question I can write only 200 characters ? My name is Damir from Montenegro,I well like to ask if you can help mi, I have Kawasaki Z 750 ABS 2008 and I just by Arrow header pipes with connection for lambda sensor (I will connect stock sensor back) and I have aftermarket muffler, I also by K&N Air filter and planning to by Brisk spark plugs AR10ZS or AOR10LGS (if somebody now which one is batter or they are just the same but different designee) and I planning to make air box mod, clean air mod with connected gear case vent to the clean air ports, and I planning to make remap bat without any power commander just on bike computer but without dino because in my country still nobody have it. Exhaust butterfly valve servo motor is still connected to the ECU but I drive with aftermarket muffler and stock header pipes already 19000 km without any problem and any mistake lumps on in the instrument board. My question is if I need to remove Exhaust butterfly valve servo motor and to install jumper and to I need also secondary butterfly valves mod or not and what I get from it and if you have some more suggestions for me or If I need to jump something’s ells? Thanks in advance. I write in comment be Couse in question I can write only 200 characters ?