Debutant Jake Gosling grabbed the all-important second goal to help Khalsa come from behind to beat a game and powerful Long Eaton outfit.
Khalsa dominated the first half, racking up chance after chance but frustratingly failing to make the necessary breakthrough.
Liam Armstrong had a shot deflected wide for a corner after five minutes and then seven minutes later Mensah Kinch rampaged down the right and put in a dangerous cross which needed Ryan Head to intervene to deny the lurking Josh McKenzie.
Gaz Singh had a really good opportunity on 22 minutes, put through and bearing down on goal only for United keeper Jason White to block the shot with his legs.
United almost took the lead on the half hour against the run of play, Niall Towle’s header saved by Sam Arnold and pushed to safety.
With five minutes left in the first half, McKenzie somehow failed to convert from close range, striking the crossbar in a crowded penalty area.
As the second half kicked off, there was a sense Khalsa might regret the missed chances and failure to convert possession to opportunities.
Cameron Hawkes fired a dangerous cross from the right within three minutes, eluding every Long Eaton shirt in the box. But the visitors took the lead seven minutes later, Towle finishing in style from the angle.
The lead lasted only seven minutes, however, Kinch racing onto a through ball down the right flank and lobbing White to make it one apiece.
This signalled the game exploding into life. Singh almost gave Khalsa the lead, a great move started by McKenzie and orchestrated by James McGrady ended with Singh’s shot flashing just wide.
Five minutes later and David Kolonynski almost restored Long Eaton’s lead, shooting agonisingly wide from the angle. At the other end, McKenzie had a shot saved by White after great work by Armstrong who cut into the area but couldn’t get a shot away, instead having to pass in a far from ideal situation.
Arnold had to save well to smother an effort after a long throw from Kieran Walker – whose cannonball-style throws from every part of the touchline gave the game an interesting dynamic. Kolonynski had an opportunity on 81 minutes after a slip by Tes Robinson with Long Eaton pressing hard for the three points.
But Gosling – who came on for his debut to replace goalscorer Kinch – put Khalsa in front on 86 minutes, a one-two with Armstrong giving him an opening which he took in style.
And two minutes into injury time Armstrong was again the architect, setting up McGrady to nod home and make it 3-1.
Sporting Khalsa: Sam Arnold, Carlo Franco, Sean Williams, Leon Miles, Tes Robinson (captain), Liam Armstrong, Mensah Kinch (Jake Gosling), Mike Perks, Josh McKenzie, Gaz Singh (Mykel Beckley), Gaz Singh, James McGrady. Subs not used: Alex Perry, Alex Woodhouse, Mark Smith.