Ok.
Cable being snug.. using a 1/4" drill, drill the hole where the old cable sat, this will open it side to side and allow you to work your cylindrical cable end into that new 1/4" hole side to side with a small screwdriver. This will relieve the tension.
Lower left silver round piece is the side of the cylinder on the throttle cable.
69, well your throttle is clearly having fun, isn't it? Move the throttle with your hand then bend the bracket it's catching on a little bit. That'll allow you to open it 100%. And referring to the above picture, the thingee on the side that the cables are hooked to is likely catching the bottom of the bracket.
