Complex sentence: In most drawings, his guitar looks identical to Archie's, making him the band's second (or co-lead) guitarist--but a number of drawings clearly show Reggie's instrument to have four tuning keys, the most common bass design.
Split into simpler sentences: In most drawings, his guitar looks identical to Archie's, making him the band's second (or co-lead) guitarist. However, a number of drawings clearly show Reggie's instrument to have four tuning keys, the most common bass design.