rca plugs connector loose?

[admin_exported]

my van den hul the name interconnect doesn't fit so well on my arcam alpha 7 amp, the connection is loose. but on my other interconnects the connection is very tight and excellent, i am looking to change the plugs any suggestions? no budget.

 

[Thaiman]

Neutrik if you don't want to spend a lot and Eichmanns bullet plugs if you feel like splashing out (the latter are very tight fit and great reviews everywhere)