The win puts them level with Mumbles at the top, who triumphed 26-13 at home to Carmarthen Athletic but missed out on a bonus point against their stubborn opponents.
Kidwelly continued to run in the tries, this time putting six past Tumble in a 42-20 win. That moves them level with third placed Lougher who scraped past Gorseinon 26-23 but they also missed the bonus point.
Elsewhere, Penclawdd won at Cwmavon and Pontyberem beat Pencoed who were a place above them in the league.
In Division Three, it was Aberystwyth who prevailed against Laugharne in the battle between the third and fourth placed sides, coming through 24-19, while the leaders Ammanford recorded a 34-3 bonus-point win over Cwmgors and second placed Llanbydder matched them with a six-try, 36-12 win over Pembroke Dock Quins.
There were also wins for Cardigan who edged past Newcastle Emlyn 10-8, for Llanelli Wanderers who overcame Haverfordwest 22-15 and Lampeter who were too strong for Amman United, coming through 20-14.
Hendy were the top scorers in Division Four with eight tries in their 53-7 demolition of Neyland, a result which keeps them at the top, while their closest rivals Pontarddulais were beaten for only the second time this season, 23-14 at Trimsaran and allowed Trimsaran to leap frog them in the table.
Burry Port and Aberaeron continue to lead the way in Division Five after wins against Llangwm and Fishguard respectively.
