Hi, I think I should be able to do this, but you do know that the last time I replied on this shop was 2 years ago? It’s a bit inactive, so I might take a while to do the request. 
Hi, I think I should be able to do this, but you do know that the last time I replied on this shop was 2 years ago? It’s a bit inactive, so I might take a while to do the request.