nite finder modding

hey im new to nerfing and i have just got a white out series nite finder and a c-836 sring and when you shoot the dart goes spastic(goes side ways) and hardly gives it more power anyone got a solution and i have also done double o-rings and rubber bands<(awesome mod)it was my firt real mod so i may have gone wrong somewhere the spring is HUGE compared to the stock one and hardly fit(should i chop it) hope you can figre out why it doesent give it more power thanks

It would help if you typed abit more better. It kind of look like one really long question. Could you fix that up, so that others maybe able to help you rather than give up because it's too hard to read?

Also if you got questions, ask it in the 'question's thread' located in the Welcome To Oznerf as a sticky above.

Answering your question, what darts are you using? It's common that stock darts fly randomly with a stronger spring.

im so sorry i posted in the wrong place but im useing whistlers they seem a little better

It would seem with the stock NF, the whistlers perform better, but have you tried streamlines with the modded NF?

Also generally we cut 2 coils off the C-836 so it rests naturally inside the Plunger. Maybe add some Lubricant because of the new o-ring as well.

Those are a couple of things you can try out, Good Luck

Add a small weight to the dart. More power = Less Accurate. Adding a weight will counter this however will sacrfice some range. You'll just need to experiment and improvise your correct weight ratio.