JoLida 100 potential problem

Hi there,

Yesterday I recieved my Rca tubes and I immdiately installed them. Easy enough to do enough though it's pretty cramped inside maybe it's due to my level-2 mod. On to my question when I installed the new tubes and put back the metal sheaths I tried to tighten the screws but was unable to do so. I left them unscrewed in this state can a problem what so ever occur. I'm mostly concerned when moving the player that the screws will pop out.

Thanks