Timing retarding 2* after installing crank trigger

I just noticed the crank trigger bracket is Vibrating pretty good , which is causing the timing mark not to be rock steady .... Now I wonder if that is also where the 2* retard is coming from... Think I will locate a bracket , so I can mount it to the motor instead of the motor plate....

 

Just got done installing the new msd bracket , but still same problem... One thing I made sure of is, when I rev the engine up' the more it retards... It's not stopping at 4* it keeps retarding as the rpm's go up...slow but keeps retarding... I'm gona say with nos it is retarding even more with faster and higher rpms.