I always shoot to the left about 3-4 inches with standard fletch at about 10-15 yards. But with flu-flu with rubber blunt I am dead on????? Any help would be great!!!!!!!                      THANKS

Is your point weight the same with both arrows?  Have you checked for fletch clearance on the bow?

Have you tried to paper tune your arrows?....
Flu-Flu due to the amount of fletching can have the same arrow fly out of 40# and 60# bows

Are you using the same shafts??

I haven't tried to paper tune as yet,I will and will let you know. We had alot of rain and I haven't been able to shoot any. The weight of the rubber tips are a little heavy. Thanks,Fred

If you shoot to the left and shoot right handed, the spine is too stiff!!!! Don't judge spine by flu flu's.
Bob

Spine could be way under causing left hits too, but 3-4" left consistently is most likely overspined.  The flu will straighten the arrow out faster which is causing the difference.

Thanks guys,Its still raining here,but I will check all the things you have all said. I need to make a spine guage.I used to shoot wheels but really like trad better.Its a big change though as far as aiming.I'm going to keep at it!!!!!!  Thanks                                           Fred

Ok,I think I got it,I went to a heavyer spine arrow and changed my anchor a bit.Everthing seems ok. Thanks everone.