Old Priorian’s were made to pay for handling and discipline errors as they fell to a 20-13 London One North loss to Luton on Saturday.
The OP's made an excellent start with James Booth and Ari Jack Dever combining to set up Seb Oddi for the first try.
Booth added a penalty before Charlie Allum touched down in the first five minutes of the second half to give the Twisters a 13-3 lead.
However, Luton took control of the game thanks to some sloppy play and two tries from Ryan Doyle helped the home side to victory.
Head coach Anthony Andrews said: "I thought the boys played very well but just didn't get the rub of the green with a few key decisions.
"We will go back to the training ground this week to work on a few areas which cost us at the weekend and be ready for a big home game against Letchworth on February 21."