Merging Multiple blocks into one

[mehtap özkan]

Dear All,
I have a flowgraph where I use multiple Standart Blocks.
The Application requires low sample and symbol rates, therefore the buffers
between the blocks cause a lot of Latency.
 Is there a way to merge the standart blocks or do I have to manually merge
the c++ sources and   re-compile them.
Thank you in advance.