RWML multilingual

I’ve been using the RWML stacks to relatively successfully build a multilingual website for my small business.

I was finding the basic stacks a bit restricting though, so purchased Foundry to get a ‘blank canvas’. Problem is it’s a bit too blank🤣 - for example my lovingly crafted bilingual navigation tabs have disappeared.

Does anyone know if it’s actually possible to use RWML and Foundry together? Really want to use the software but being bilingual is vitally important to my translation business.

Thanks in advance