Saw your thread in general, and I did remember Kuta being the more commercialized part of Bali--I would really recommend your hotel concierge to find out where are the big malls, which they usually have Ace Hardware. Last time I was in Indonesia, most Ace hardware do carry LM and other MT products.
I quickly did a google map search for you, and the following are the few Ace hardware I found near 'Kuta, Bali':
ACE HARDWARE - Central Park Kuta
Central Park Kuta
Kuta Galeria, Jl. Patih Jelantik
Kuta
Kabupaten Badung, Bali 80361, Indonesia
ACE Hardware - Denpasar
JL. Gatot Subroto Pusat No.343
Denpasar Utara
Kota Denpasar, Bali 80231
Indonesia
ACE HARDWARE - Nusa Dua Square
Jl. By Pass Ngurah Rai 162 Jimbaran
Nusa Dua Square
Jl. By Pass Ngurah Rai
Kuta Sel., Kabupaten Badung, Bali 80228, Indonesia
Good luck!