I like Marchouse and he normally says the truth but i think he's going too far by bringing in family issues, we don't want to hear whose wife did what or whose children are what, it's unnecessary and childish, let him stick to artistic,education and wealth issues which are normally used for banter between rival camps in music.
He's said the truth about Olivier Tshimanga, Olivier didn't do much on Boite Noire, there was also another outside guitarist who added his lead acoustic like Tshimanga and it's Domingo Mbetenge. All the rhythms and recordings were done with Marchouse and other guitarists in kinshasa before Ferre took the final recordings to Europe where Olivier and Mbetenge added their lead acoustic rhythm on a few songs not all and what that means is that they had to follow on with the set rhythm already created by Marchouse.
Olivier Tshimanga is an excellent guitarist quite alright but whatever he can do any other guitarist can do, Ferre Gola got Marchouse for a reason, it's because Marchouse also plays Olivier's style. What Olivier Tshimanga does is not extra-ordinary, he uses capos to produce distinctive sounds on his guitar and also uses other styles especially spanish and flamenco guitar style to enrich the sounds on congolese rhumba,any good guitarist can do that except they prefer to stick to original rhumba style. Tshimanga explained what he does in a guitar tuition video sold by prosmart studios.