THE New Saints boss Ken McKenna was again left perplexed, despite seeing his side reel off their fifth win in a row to make up more ground on the leaders.
The defending champions had looked comfortable for an hour and were 3-0 up, but endured a nervy finish that saw Nomads reduce the arrears before being controversially denied a second for offside late on.
"When we've been comfortable this season, we've had a tendency to switch off which I can't understand," said McKenna.
"I can't put my finger on it, but we're not quite right at the moment."
But Saints moved up to fourth with midfielder Luke Holden providing more trickery on the left to help put the hosts in charge.
Nomads found themselves trailing on 12 minutes when Mike Wilde turned in Holden's cross from the left.
Alfie Carter made it two with his seventh of the campaign as he lobbed keeper Paul Pritchard but he spurned further chances, before eing denied when one-on-one with Pritchard.
Nomads upped a gear after the break, but they fell further behind when Scott Ruscoe's cross was turned into his own net by Gary Pinch.
Mark Cadwallader pulled one back and Nomads substitute Stewart White had the ball in the net 10 minutes from time only for a team-mate to be ruled offside – a decision that saw Nomads boss Jim Hackett red-carded from the dug-out by referee Wayne Tregonning.