I found
Evgeny Kolchugin's advice very irrelevant. Terribly non-useful. Wrong.
What does he suggest?
To check paternal line relatives?
To what?
What will this add?
Which new information?
We know:
1. Your ethnic profile doesn't have any European traces. I.e. your European ancestral connection is deeper than 4-5 generations. No closer than the beginning of the 19th century.
2. Your subclade is mostly European. "Slavic".
So, I'll try to ask people who work for R1a haplogroup to see and analize your data.