I HAVE A WESTERN FLYER 26" AND I PUT A NEW RIMS/TIRE SET ON IT TODAY AND ALL OF A SUDDEN... WHEN I START TO PEDAL IT DONT "GRAB OR PEDAL" UNTIL I GET DANG NEAR A FULL PEDAL IN THEN IT GRABS AND STARTS TO WORK ANY IDEAS ON WHAT THE PROBLEM IS? LIKE I SAID IVE NEVER SEEN THIS OR HAD THIS HAPPEN BEFORE ANY INFO/TIPS WOULD BE FANTASTIC. THANKS